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Mukund
 Post subject: saving child objects
PostPosted: Tue Jan 27, 2004 1:40 pm 
Beginner
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Joined: Tue Oct 07, 2003 12:11 pm
Posts: 32
Location: US
my objectA is mapped to tableA
my objectA has a set (java.util.Set) that set has objectB
my objectB is mapped to tableB

I am doing a session.save(objectA);

will my data in objectB saved during the same call?

my mapping file is like this



Code:
<class name="ObjectA" schema="APP" table="tabA">
<id column="TYPE_CODE_OID" name="id" type="java.lang.Long">
<generator class="assigned"/>
</id>
<property column="TAB_A" length="5" name="typeCode" not-null="true" type="java.lang.Short"/>
<property column="APPL_VARIABLE" length="255" name="applVariable" type="java.lang.String"/>
<property column="PATH" length="255" name="path" not-null="true" type="java.lang.String"/>
<property column="SEQ_NUM" length="5" name="seqNum" not-null="true" type="java.lang.Short"/>
<property column="ACTIVE_FLAG" length="5" name="activeFlag" not-null="true" type="java.lang.Short"/>
<property column="MODIFIABLE_FLAG" length="5" name="modifiableFlag" not-null="true" type="java.lang.Short"/>
<property column="MODIFIED_DATETIME" length="29" name="modifiedDatetime" not-null="true" type="java.util.Date"/>
<property column="MODIFIED_DATETIME1" name="modifiedDatetime1" not-null="true" type="java.util.Date"/>
<property column="MODIFIER_ID" length="30" name="modifierId" not-null="true" type="java.lang.String"/>
    <set name="typeCodeText" lazy="false" inverse="true">
        <key column = "TAB_A_OID"/>
        <one-to-many class="ObjectB"/>
    </set>
</class>
<class name="ObjectB" schema="APP" table="tabB">
<composite-id>
<key-property column="LOCALE" length="30" name="locale" type="java.lang.String"/>
<key-property column="TAB_A_OID" length="19" name="typeCodeOid" type="java.lang.Long"/>
</composite-id>
<property column="ABBR_DISPLAY_TEXT" length="60" name="abbrDisplayText" type="java.lang.String"/>
<property column="DISPLAY_TEXT" length="255" name="displayText" type="java.lang.String"/>
</class>
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michael
 Post subject:
PostPosted: Tue Jan 27, 2004 1:43 pm 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
only with cascade settings for the set.
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Mukund
 Post subject:
PostPosted: Tue Jan 27, 2004 2:52 pm 
Beginner
Beginner

Joined: Tue Oct 07, 2003 12:11 pm
Posts: 32
Location: US
Sorry I am not familiar with cascade settings. How do I do that in my config file.
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christian
 Post subject:
PostPosted: Tue Jan 27, 2004 2:55 pm 
Hibernate Team
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Joined: Mon Aug 25, 2003 9:11 pm
Posts: 4592
Location: Switzerland
Read the "Parent/child relationship" chapter of the documentation.

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Mukund
 Post subject:
PostPosted: Tue Jan 27, 2004 5:20 pm 
Beginner
Beginner

Joined: Tue Oct 07, 2003 12:11 pm
Posts: 32
Location: US
I saw the "Parent/child relationship" chapter and added cascade="all" in my mapping file. I am using a <one-to-many /> tag in ObjectA
I am not using <many-to-one... /> in the ObjectB

I get an error. When I try to create a new entry, it seems to be doing alright with the ObjectA. But it seems to be updating the ObjectB instead of inserting and then throws an exception.

Here is the debug log for Hibernate classes.
Code:
2004-01-27 14:54:55,373 DEBUG (SetTypeCodesCmd.java:433) - Setting TypeCode OID = 400001
2004-01-27 14:54:55,373 DEBUG (SetTypeCodesCmd.java:447) - Found TypeCodeText. Setting TypeCode OID = 400001
2004-01-27 14:54:55,393 DEBUG (EntityPersister.java:464) - Inserting entity: com.gtech.service.typecode.TypeCode#400001
2004-01-27 14:54:55,413 DEBUG (EntityPersister.java:366) - Dehydrating entity: com.gtech.service.typecode.TypeCode#400001
2004-01-27 14:54:55,453 DEBUG (EntityPersister.java:617) - Updating entity: com.gtech.service.typecode.TypeCodeText#com.gtech.service.typecode.TypeCodeText@6d9e6c[locale=en_US,typeCodeOid=400001]
2004-01-27 14:54:55,483 DEBUG (EntityPersister.java:366) - Dehydrating entity: com.gtech.service.typecode.TypeCodeText#com.gtech.service.typecode.TypeCodeText@6d9e6c[locale=en_US,typeCodeOid=400001]



Code:
<class name="com.gtech.service.typecode.TypeCode" table="MS_TYPE_CODE2">
   <id column="TYPE_CODE_OID" name="id" type="java.lang.Long">
      <generator class="assigned"/>
   </id>
   <property column="TYPE_CODE" length="5" name="typeCode" not-null="true" type="java.lang.Short"/>
   <property column="APPL_VARIABLE" length="255" name="applVariable" type="java.lang.String"/>
   <property column="PATH" length="255" name="path" not-null="true" type="java.lang.String"/>
   <property column="SEQ_NUM" length="5" name="seqNum" not-null="true" type="java.lang.Short"/>
   <property column="ACTIVE_FLAG" length="5" name="activeFlag" not-null="true" type="java.lang.Short"/>
   <property column="MODIFIABLE_FLAG" length="5" name="modifiableFlag" not-null="true" type="java.lang.Short"/>
   <property column="MODIFIED_DATETIME" length="29" name="modifiedDatetime" not-null="true" type="java.util.Date"/>
   <property column="MODIFIER_ID" length="30" name="modifierId" not-null="true" type="java.lang.String"/>
    <set name="typeCodeText" lazy="false" inverse="false" cascade="all">
        <key column="TYPE_CODE_OID"/>
        <one-to-many class="com.gtech.service.typecode.TypeCodeText"/>
    </set>
</class>
<class name="com.gtech.service.typecode.TypeCodeText" table="MS_TYPE_CODE_TEXT2">
   <composite-id>
      <key-property column="LOCALE" length="30" name="locale" type="java.lang.String"/>
      <key-property column="TYPE_CODE_OID" length="19" name="typeCodeOid" type="java.lang.Long"/>
   </composite-id>
   <property column="ABBR_DISPLAY_TEXT" length="60" name="abbrDisplayText" type="java.lang.String"/>
   <property column="DISPLAY_TEXT" length="255" name="displayText" type="java.lang.String"/>
</class>
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christian
 Post subject:
PostPosted: Tue Jan 27, 2004 5:33 pm 
Hibernate Team
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Joined: Mon Aug 25, 2003 9:11 pm
Posts: 4592
Location: Switzerland
Hibernate can't distinquish between new and old instances if you use assigned or composite identifiers, thus it can't cascade proberly. Use explicit save() or update() calls, or implement an Interceptor.

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gavin
 Post subject:
PostPosted: Tue Jan 27, 2004 5:36 pm 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
Quote:
Hibernate can't distinquish between new and old instances if you use assigned or composite identifiers


Well, not unless you add a version property.
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